Speed-governor



H. G. SAAL.

SPEED GOVERNOR.

APPLICATION FILED NOV. 17. 19:9.

1 352, 22 3 Patented Sept, 7, 1920.

axis to) effect desiredfadjustment HENRY G. sAAifoF CHICAGO, ILLnvoIs.

SPEED-GOVERNOR.

T0 aZlwhomz'trmag concern:

Be it known that I,-HENRY G. :SAAL, citizen of'the United ,States residing at Chicago,"in the county of Cook and State of Illinois, haveflinvented a certain new'and useful Improvement in Speed-Governors, of

which, the'following is a full, clear concise,

and {exact' description.

My invention relates to speed 'gov'ernors employing motor driven worm wheels that drlve speed governing worm shafts, and has for its object the provision of improved -means for adjusting the shaft with respect to the worm Wheel.

In carrying out 'my invention I employ a bracket, in which the worm shaft is journaled to-rotate. This bracket is pivoted remotelyfrom the worm wheel toturnupon an axis substantially parallel with the axis of the worm wheel. ;.The're is adjusting meohanismadjacent the aXis 'of the worm wheel forturning said bracket. .upon its of" the meshing ofthe wheel and-shaft. 7

I will explain my inventionmore fully by 1 reference to the accompanying drawing 1 showing the preferred embodiment thereof and in which Figure 1 is a view in elevation of a part of motor mechanism employed in the operation of a phonograph and Fig. 2 is a sectional plan view on line 2 2 of Fi 1. I flike parts are, indicated by similar'characters of reference in' both figures.

The governor illustrated is shown 'as' being associated with a shaft 1 that is adapted for the operation of a turn table'forsupporting a disk phonographic'record, this shaft supporting a worm" wheel 2 engage able by a worm 3 provided upon'the governor shaft 4. In accordance wfith'common practice the shaft 1 is driven by a spring motor through gearing, the gear wheel 2 being added in orderthatthe shaft 1 may drive the worm 3to rotate the governor shaft at for the purpose of operating the centrifugal governor 5 to maintain the speed of the turn table substantially constant.

-This c'entrifugal governor 1S".Of"COInII1OI1 form, the vweights thereof being mounted upon intermediate portions of the resilient strips 6. Each of these resilient strips is mounted at one endupon a sleeve 7 rigidly secured to the shaft the other end of each resilient, strip being connected with a collar 8 that ismovablealong the shaft 4 v Specification of Letters Patent.

"other end of the bell -operatesyieldingly to hold the brake pad in .its normally fixed position.

Patented Sept. 7, I920.

' Application filed November 17; 1919. Serial no. 338,553.

which engagesthe pad 9 when the governor shaft 4 reaches whereby the speed of the turn table shaft 1 is controlled.

In the embodiment of the invention illustrated the brake-pad. 9' constitutes the nor- .mally stationary brake member, this pad, however, being is pivotally mounted at 11 to the swinging bracket 12.- A spring 13 is received in a recess 1n the bracket 12, the projecting end of a predetermined speed 'andiwith respect to the brake element or pad 9. Thenollar 8 is in fixed relation to the .brake dlskor rotatable brake member 10 desirably mounted at one end-of one arm of the bellcrank 10 which the spring engaging 'theledge 14 upon the l crank 10".

A lever 15 is This spring connected with the bell crank, the position of this lever being manually adjusted, by mechanism which need not be described, to

:fixthe position in which'the spring 13 is adaptedto normally place the brake pad' 9. The governing worm shaft 4 is "also mounted upon the bracket'12, all of, the

automatic mechanism of the governorbeing thus mounted upon said bracketto bemovable as a unit therewith so that the rela tionship ofthe various parts of the governor not disturbed when said bracket isswung to adjust the meshing of the worm 3- with :the worm wheel 2. Tho bracket 12 is pivoted to the motor frame 16 bymeans ofa pivotscrew 17 which is" located remotely fromtthe shaft 1. and the worm wheel 2- on this shaft and which furnishes an-qaxis of sw nging movement for this bracket whlch issubstantially parallel with the" axis 'of shaft 1 and'worm .wheel 2. The frame 16 supports the unillustrated motor and the -worm wheel 2'driven thereby in orderthat the swinging bracket .maybe adjustable with respect to the frame :16 thereby to afford adjustment for the worm-f shaft 3 with respect to the worm wheel; Ate place close *tothe axis: of the worm wheel is located an anchoring screw" 18 which is in. threaded connection with frame=16 and-whose head engages a portion of the bracket 12'and whose threaded stem has engagenientavith the motor frame '16. The stem, of screw 18' desirably passes through'a slot 19 in the bracket 12, this slot being elongated on a line that substantially coincides with aicircle whose center lies in the-axis of screw 17,

' secured I employ an adjusting screw 20 whose stem is screwed into the motor frame 16 in a direction to have theaxis of rotation ofthis screw transverse to the axis of swinging movement of the 'bracketithat is defined by the screw 17.

Thehead of he screw desirably has an annular groove 21, while the bracket 12 carries a pin 22that enters said groove. 'By

this arrangement the bracket 12 may readily be swung for the purpose stated, the screw 18 being loosened preparatory to adjustment and tightened when the adjustment has been effected.

7 While I have herein shown and particularly described the preferred embodiment of my invention, I do not wish to be limited to the precise details of construction shown as changes may readily be made without departing from the spirit of my invention, but having thus described my inventionI claim as new and desire to secure by Letter Patent the following 1. Speed governing mechanism including a motor operated worm wheel; a frame for iupporting the worm wheel; a bracket pivvtally connected with said frame at a point remote from the axis of said worm wheel lIld affording an axis of swinging moveiient which is substantially parallel with the LXlS of said wheel; a governor mounted upon said bracket inclusive of a worm shaft in mesh with the worm wheel, a rotatable brake member upon theshaft, and a second brake member complemental to the rotatable brake member; and a lever carrying the second aforesaid brake member and itself also pivotally mounted upon said bracket.

' 2. Speed governing mechanismincluding a motor operated worm'wheel; a frame for supporting the worm wheelya bracket pivotally connected with said frame at a point remote from the axis of said worm wheel and affording an axis of swinging movement which is substantially parallel with i the axis of said wheel; a'governor mounted upon said bracket inclusive of a worm shaft ,in mesh with the worm wheel, a rotatable brake member upon the shaft, and a second brake member complemental to the rotatable brake member; a lever carrying the second aforesaid brake member and itself also pivotally mounted upon said bracket;

and means adjacent the axis of the worm wheel for swinging said bracket.

,remote from the axis of said worm wheel 3. Speed governing mechanisniincluding a motor operated worm wheel; a frame for supporting the worm wheel; abracket pivotally connected with said frame at a point table brake member; a lever carrying the second aforesaid brake member and itself also pivotally mounted upon said bracket; and a screw threaded into the aforesaid frame and adjacentthe. axisof the worm wheel, this screw vbeing transverse to the pivotal axis of tlieibracket andfin moving engagementwith the bracket. V 4L. Speed "governing mechanism including a motor operated worm wheel; a frame for sup orting the worm wheel; a bracket pivotally-connected with said frame at a point remote from the-axis of said worm wheel and affording an'axis of swinging movement. which is substantially parallel with the axis of said wheel; a'governor mounted upon said bracket inclusive of a worm shaft in mesh with the worm wheel, a rotatable brake member upon the shaft, "and a second brake member complemental-to the rotatable brake member; a lever-carrying the second aforesaid :brake fmember' and itself also pivotally mounted upon said bracket; a screw threaded into the aforesaid frame and adjacent the axis of the'worm wheel,

this screw being transverse to the pivotal axis of the bracket and having ahead provided with'an annular-groove; and a p n carried by said bracket projecting into said groove whereby said'bracket may beswung T upon movement of said screw.

5.- Speed governing mechanism including a motor operated'worm wheel; a frame for supporting the worm wheel; a bracket pivotally connected with said frame" at a point remote from the axis of said worm wheel and affording an axis of swinging movement which is substantially parallel W'ith theaxis of said wheel; a governor mounted upon said bracket inclusive ofa worm shaft j in mesh with the worm wheel, a rotatable brake member upon the shaft, and a second' brake member complemental to the r'ota-' table brake member; a lever carrying the second aforesaid brakemember and itself also pivotally mounted upon said bracket;

screw threaded into the aforesaid frame and adjacent the axis of the worm wheel,

this screw being transverse to the pivotal axis of the bracket and having a head provided with an annular groove {a pin carried 7 d by said bracket pro ecting into said groove whereby said bracketmay be swungupon movement of said screw; and an anchoring screw also adjacent the aXis'of the worm wheel and also in threaded connection with said frame and whose head is engageable with the bracket to clamp it into adjusted position, the bracket having an opening through which the anchoringscrew passes and formed to permit the bracket to be moved with respect to the anchoring screw.

In witness whereof, I hereunto subscribe 10 my name this 30th day of October, A. D. I 1919.

ENRY e. SAAL. 

